6912978914 has 4 divisors (see below), whose sum is σ = 10369468374. Its totient is φ = 3456489456.

The previous prime is 6912978913. The next prime is 6912978931. The reversal of 6912978914 is 4198792196.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6825238225 + 87740689 = 82615^2 + 9367^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6912978914.

It is not an unprimeable number, because it can be changed into a prime (6912978911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1728244727 + ... + 1728244730.

Almost surely, 2^6912978914 is an apocalyptic number.

6912978914 is a deficient number, since it is larger than the sum of its proper divisors (3456489460).

6912978914 is a wasteful number, since it uses less digits than its factorization.

6912978914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456489459.

The product of its digits is 1959552, while the sum is 56.

The square root of 6912978914 is about 83144.3258075980. The cubic root of 6912978914 is about 1904.9711845702.

The spelling of 6912978914 in words is "six billion, nine hundred twelve million, nine hundred seventy-eight thousand, nine hundred fourteen".